CN1687677A - Heat exchange application method of transporting cold and heat source in straight flow from city native ground wastewater - Google Patents
Heat exchange application method of transporting cold and heat source in straight flow from city native ground wastewater Download PDFInfo
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- CN1687677A CN1687677A CN 200510009925 CN200510009925A CN1687677A CN 1687677 A CN1687677 A CN 1687677A CN 200510009925 CN200510009925 CN 200510009925 CN 200510009925 A CN200510009925 A CN 200510009925A CN 1687677 A CN1687677 A CN 1687677A
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Abstract
The invention is the urban primary sewage cold and hot sources DC transportation and heat-exchanging utilization method and relates to the method that uses the urban primary sewage as the hot pump source. The invention aims to solve the problems that the floating fiber sundries and solid grains block and pollute the heat exchanging system. The method is: use the DC transportation pipes as the sewage heat-exchanging systems as transporting the urban sewage to the heat pump group and returning it; the sewage does not go into other equipment when it flows in the pipes; the sewage conveys the cold and hot volume to the looping heat carrier outside of the pipe through the pipe wall and returns to the downstream of the main trench; the heat carrier conveys the cold and hot volumes to the heat pump group and returns to the transportation pipelines. The primary investment of the invention is less 10% than the prior art and the heat exchanging coefficient is as 15 times as the prior art. The invention has simple structure and non-pollution function.
Description
Technical field:
The present invention relates to a kind of application process that utilizes urban original wastewater as the heat pump Cooling and Heat Source.
Background technology:
Utilize all kinds of recyclability clean energy resourcies to have important energy saving and environment protection significance for the building heating as the heat pump Cooling and Heat Source.Municipal sewage is a city residual heat type low level clean energy resource, enormous amount, distributed areas are wide, in the winter of cold district, the municipal sewage water temperature is high 5～10 ℃ than underground water source, soil source temperature, as the heat-carrying water body, than soil source, air source heat transfer efficiency height, the heating efficiency of corresponding source pump will exceed more than 0.5.In addition, all there are limitation in essence in underground water source, air source, and for example underground water source relates to the protection problem of water resource, and the air source can't be moved when the cold district outdoor temperature is very low etc.Therefore, municipal sewage has clear superiority than other Cooling and Heat Source, and development prospect is huge.
Since the development water resource heat pump, municipal sewage just is much accounted of always, but because native sewage water water quality is extremely abominable, except that having corrosivity, it also contains a large amount of big small scale suspension fiber shape foreign material and solid phase particles, the obstruction and the pollution problem of circulation section are quite serious, are difficult to realize normal flowing and heat exchange, as shown in Figure 1 (heat transmission equipment of engineering site blocks and pollution situation figure).This technology is failed to obtain breakthrough development and is used, and mainly has following problem:
1. owing to dirt content in the sewage is very big, cost of water treatment is very high, can only take " the thick effect " treatment measures, and the obstruction of heat-exchange system and pollution problem are quite serious, and the operation maintenance operation is frequent, common little maintenance of needs in several hours, the bigger maintenance of needs in several days;
2. after heat-exchange system was subjected to obstruction and pollutes, flow is slow to fall, and causes the heat pump fluctuation of service, and heat-transfer surface pollutes and causes the heat transfer efficiency reduction, and system operation cost increases more than 10%;
3. the physical parameter viscosity owing to native sewage water is non-newtonian flow than clear water is big more than 15 times, existing heat exchange form, and for example heat transfer coefficient such as case tube heat exchanger, water spray type heat exchanger is very little, is about 600W/m
2℃, system's initial cost will exceed about 15%.
This shows, promote this The Application of Technology, must develop one and overlap not only economy but also application process that can stable operation.
A kind of " oil recovery factory's multi-purpose station sewage remaining energy is recycled heat pump assembly " disclosed among the Chinese patent CN2612906Y, this device is applicable to the heat recovery of oil-polluted water, operation principle is: sewage and clear water heat exchange, after being heated, clear water imports the evaporimeter of heat pump through water circulating pump, enter into again and enter into condenser after compressor pressurizes heats up, in condenser with heat transferred high temperature clear water, the high temperature clear water is to the dewatered oil heat radiation, and wherein sewage and clear water heat exchange are carried out in sewage-clear water heat exchanger.Owing to contain a large amount of large scale suspension fiber shape dirts and solid phase particles in the native sewage water, they can block and contaminated stream break-make face, if this device is used to reclaim the cold and hot amount of urban original wastewater, sewage and clear water are in heat transfer process, and heat transmission equipment will be kept away unavoidable appearance situation shown in Figure 1, block with pollution problem serious, the operation maintenance operation is inevitable frequent, instability of flow, heat-transfer surface pollute the back heat transfer efficiency to be reduced, and system can not safety, reliability service.
Summary of the invention:
The present invention is in order to solve the urban original wastewater that contains a large amount of dirts and to occur blocking when the heat exchange and polluting heat-exchange system and relevant issues thereof, provide a kind of clog-free, pollution-free, high efficient heat exchanging, economical, stable operation, the cold and heat source in straight flow from city native ground wastewater heat exchange application method of transporting that does not have the maintenance process of removing contamination, sewage is finished cold and hot amount and is discharged in the direct current course of conveying, detailed process is: the urban original wastewater that will contain a large amount of dirts is near the municipal sewage trunk canal is delivered to source pump and when returning, utilizing direct current feed-line (sleeve pipe) double as is the sewage heat-exchange system, sewage is in pipe during transport flow, do not enter other equipment, sewage returns the trunk sewer downstream after by carrier wall cold and hot amount being passed to the mobile heat carrier of the outer interannular of pipe, and heat carrier returns feed-line after cold and hot amount is passed to source pump.So-called direct current feed-line is meant that sewage promotes through sewage pump from trunk sewer, and in-line flows and releases the flow line that returns trunk sewer behind the cold heat release.
Cold and heat source in straight flow from city native ground wastewater carries heat exchange application method operation principle (Fig. 2) to be:
1. urban original wastewater is delivered near the source pump from the municipal sewage trunk canal by sewage pump, direct current feed-line (sleeve pipe) double as is the sewage heat-exchange system in transmission course, sewage is in pipe during transport flow, do not enter other equipment, return the trunk sewer downstream on the way, in this section course of conveying, cold and hot amount is discharged by feed-line, avoided the generation of the suspension fiber shape foreign material in the native sewage water like this with solid phase particles obstruction, pollution heat-exchange system problem; Thermophore absorbs the sewage cold-hot amount in feed-line after, enter the evaporimeter or the condenser of source pump, cold and hot amount is passed to the interannular that returns feed-line after the source pump;
2. the cold and hot amount transmission and the conversion of source pump inner evaporator and condenser, evaporimeter absorbs low-grade heat, and condenser discharges the high bit heat;
3. terminal hot and cold water enters the evaporimeter or the condenser of unit, the cold and hot amount in condenser or the evaporimeter is taken away, and be passed to terminal heat dissipation equipment.
Urban original wastewater Cooling and Heat Source key in application problem is to block pollution problem and fluid interchange problem, causes relevant issues such as the maintenance period of removing contamination is short, investment is high, operating cost is big thus.1. process is main contents of the present invention, the i.e. key issue of water source end.Direct current carries the heat exchange application method to utilize feed-line as heat-exchange system, interior extra heavy pipe internal diameter is at least 50mm, the sewage velocity in pipes is at least 0.5m/s, the release that contains the cold and hot amount of urban original wastewater of large scale dirt is finished in the sewage transport process, inner outer tube is when carrying, cold and hot amount is passed to intermediary's heat carrier, advancing the source pump heat release by heat carrier again releases cold, realize the transmission and the conversion of sewage cold-hot amount, system's initial cost is low, and technology is simple, clog-free and pollution problem, the heat exchange efficiency height does not have the maintenance process of removing contamination, can with solar energy, soil can cooperation.
Application process of the present invention has following advantage:
1. the feed-line that utilizes sewage has saved the sewage heat transmission equipment as the sewage heat-exchange system, and system's initial cost will hang down more than 10%;
2. carry the sewer line caliber very big, no dirt blocks the flow section problem, and inside pipe wall pollutes limited, does not have the maintenance process of removing contamination, and has solved the key issue of this technology;
When 3. carrying sewage, diameter of conveying pipe is big, generally about 200mm, the flow velocity height, generally between 2～3m/s, and common heat exchange flow velocity is about 1m/s, therefore the heat exchanger tube internal diameter carries the coefficient of heat transfer of heat-exchange system up to more than 15 times of common heat exchange below 20mm;
4. this method can will utilize solar energy, soil to join together with water resource system well, after the shunting of feed-line interannular clear water, and each system's parallel running.
Description of drawings:
Fig. 1 blocks and pollution situation figure for the urban original wastewater heat exchanging equipment, Fig. 2 carries heat exchange application method flow chart for the urban original wastewater Cooling and Heat Source, Fig. 3 is that urban original wastewater Cooling and Heat Source direct-burried is carried heat exchange method flow chart, how Fig. 4 carries heat exchange process figure back and forth for the urban original wastewater Cooling and Heat Source, and Fig. 5 is many thermals source of urban original wastewater Cooling and Heat Source cooperation flow chart.
The specific embodiment:
The specific embodiment one: present embodiment is achieved in that urban original wastewater that (one) will contain a large amount of dirts is near the municipal sewage trunk canal is delivered to source pump and when returning, utilizing direct current feed-line (sleeve pipe) double as is the sewage heat-exchange system, sewage is in pipe during transport flow, do not enter other equipment, sewage returns the trunk sewer downstream after by carrier wall cold and hot amount being passed to the mobile heat carrier of the outer interannular of pipe, and heat carrier returns feed-line after cold and hot amount is passed to source pump; (2) evaporimeter of source pump inside, condenser transmit and conversion cold and hot amount, and cold and hot amount is passed to the terminal circulatory system; (3) end system is delivered to indoor or cold and hot user with cold and hot amount by terminal heat dissipation equipment.Sewage and thermophore part or all of fully countercurrent flow when heat exchange wherein, described thermophore is salting liquid, ethylene glycol or clear water.
The specific embodiment two: according to the arrangement of feed-line, feed-line can be arranged in aboveground space or be laid in source pump and trunk sewer between the underground space, specifically be divided into pipeline directly buried installation, trench laying and aboveground space and lay.With the pipeline directly buried installation is example, as shown in Figure 3, present embodiment realizes the application of urban original wastewater Cooling and Heat Source by three processes: 1. sewage returns after being transported near the machine room by sewage pump from the municipal sewage trunk canal, and feed-line is an internal and external casing, flow in the sewage pipe, intermediary's thermophore flows at interannular, and diameter of inner pipe is determined according to condition of water quality, is at least 50mm, velocity in pipes is at least 0.5m/s, when both are incompatible, be as the criterion with caliber, section does not get clogged to guarantee to circulate; 2. the cold and hot amount transmission and the conversion of source pump inner evaporator and condenser, evaporimeter absorbs low-grade heat, and condenser discharges the high bit heat; 3. terminal hot and cold water enters the evaporimeter or the condenser of unit, the cold and hot amount in condenser or the evaporimeter is taken away, and be passed to terminal heat dissipation equipment.This method can be utilized part soil energy, and this moment, the line pipe outer wall was set to fin, to strengthen soil and thermophore heat exchange.
The specific embodiment three: distance is less between municipal sewage trunk canal and heat pump machine room, when the feed-line transfer heat is not enough, feed-line can be carried heat exchange back and forth more than twice or twice, be illustrated in figure 4 as two and carry heat exchange back and forth, also can implement more than twice back and forth according to the heat exchange amount.When there being cause specific, in the time of can not between trunk sewer and source pump, implementing to carry the heat exchange pipeline, the direct current feed-line can be arranged at other spaces on the ground, for example place (ceiling and/or sidewall spaces in the heat pump machine room) or other free spaces in the heat pump machine room.Heat transfer process is identical with the specific embodiment one.
The specific embodiment four: present embodiment is that the parallel running of many thermals source is implemented, and comprises municipal sewage and solar energy, soil source associating.With solar energy is example, as shown in Figure 5, intermediary's thermophore can partly circulate in solar thermal collector, part circulates in the feed-line interannular, the matching problem of two thermals source has been passed through the back, thermophore interflow of solar thermal collector and feed-line interannular or has been entered the source pump release heat respectively by intermediary's thermophore shunt volume decision.If, then need the feed-line direct-burried, and need certain buried depth with urban sewage source and soil source associating, this moment, the line pipe outer wall was set to fin, to strengthen soil and intermediary's thermophore heat exchange, when the source pump intermittent duty, in this system, soil still can doublely be done the heat storage and cold accumulation source.
Claims (6)
1, the cold and heat source in straight flow from city native ground wastewater heat exchange application method of transporting, it is characterized in that sewage finishes cold and hot amount and discharge in the direct current course of conveying, detailed process is: the urban original wastewater that will contain a large amount of dirts is near the municipal sewage trunk canal is delivered to source pump and when returning, utilize direct current feed-line double as to be the sewage heat-exchange system, sewage is in pipe during transport flow, do not enter other equipment, sewage returns the trunk sewer downstream after by carrier wall cold and hot amount being passed to the mobile heat carrier of the outer interannular of pipe, and heat carrier returns feed-line after cold and hot amount is passed to source pump.
2, cold and heat source in straight flow from city native ground wastewater heat exchange application method of transporting according to claim 1 is characterized in that the feed-line internal diameter is at least 50mm, and effluent flow rate is at least 0.5m/s in the interior pipe.
3, cold and heat source in straight flow from city native ground wastewater heat exchange application method of transporting according to claim 1, it is characterized in that solar thermal collector in parallel with feed-line, part thermophore circulates in solar thermal collector, and another part circulates in feed-line, two thermal source cooperations.
4, according to claim 1 or 3 described cold and heat source in straight flow from city native ground wastewater heat exchange application method of transporting, it is characterized in that the direct current feed-line be arranged in aboveground space or be laid in source pump and trunk sewer between the underground space, or place ceiling and/or sidewall spaces in the heat pump machine room.
5, cold and heat source in straight flow from city native ground wastewater heat exchange application method of transporting according to claim 4 is characterized in that when the direct-burried feed-line line pipe peripheral hardware fin is with the soil source cooperation.
6, cold and heat source in straight flow from city native ground wastewater heat exchange application method of transporting according to claim 4, it is characterized in that distance is less between municipal sewage trunk canal and heat pump machine room, when the feed-line transfer heat was not enough, feed-line was set to carry back and forth more than twice or twice heat exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510009925 CN1285868C (en) | 2005-04-26 | 2005-04-26 | Heat exchange application method of transporting cold and heat source in straight flow from city native ground wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510009925 CN1285868C (en) | 2005-04-26 | 2005-04-26 | Heat exchange application method of transporting cold and heat source in straight flow from city native ground wastewater |
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| CN1687677A true CN1687677A (en) | 2005-10-26 |
| CN1285868C CN1285868C (en) | 2006-11-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357677C (en) * | 2006-02-28 | 2007-12-26 | 哈尔滨工业大学 | Cold district sewage cold-hot source sewage accompaning-heat treating device |
| CN100455970C (en) * | 2007-06-07 | 2009-01-28 | 哈尔滨工业大学 | Sewage and surface water heat pump open tunnel type heat exchanging tank heat exchanging method and apparatus thereof |
| CN102498347A (en) * | 2009-09-15 | 2012-06-13 | 乌里希管道技术股份有限公司 | Heat exchanger assembly and method for transporting thermal energy |
| CN104964483A (en) * | 2015-07-03 | 2015-10-07 | 中铁第四勘察设计院集团有限公司 | Heat recovery type sewage source heat pump system |
-
2005
- 2005-04-26 CN CN 200510009925 patent/CN1285868C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357677C (en) * | 2006-02-28 | 2007-12-26 | 哈尔滨工业大学 | Cold district sewage cold-hot source sewage accompaning-heat treating device |
| CN100455970C (en) * | 2007-06-07 | 2009-01-28 | 哈尔滨工业大学 | Sewage and surface water heat pump open tunnel type heat exchanging tank heat exchanging method and apparatus thereof |
| CN102498347A (en) * | 2009-09-15 | 2012-06-13 | 乌里希管道技术股份有限公司 | Heat exchanger assembly and method for transporting thermal energy |
| CN102498347B (en) * | 2009-09-15 | 2014-08-13 | 乌里希管道技术股份有限公司 | Heat exchanger assembly and method for transporting thermal energy |
| CN104964483A (en) * | 2015-07-03 | 2015-10-07 | 中铁第四勘察设计院集团有限公司 | Heat recovery type sewage source heat pump system |
| CN104964483B (en) * | 2015-07-03 | 2017-07-18 | 中铁第四勘察设计院集团有限公司 | A kind of recovery type heat sewage source heat pump system |
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| Publication number | Publication date |
|---|---|
| CN1285868C (en) | 2006-11-22 |
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